Gilroy boxer Robert Guerrero, returning from a 13-month layoff, won a unanimous decision Saturday over Yoshihiro Kamegai of Japan in their 12-round welterweight bout in Carson (Los Angeles County).

Guerrero (32-2-1) hadn't fought since his one-sided loss to Floyd Mayweather Jr. The former four-division champion was severely tested by the tenacious Kamegai (24-2-1), who took tremendous punishment in a draining slugfest.

Guerrero fought the second half of the fight with a grotesque cut and swelling on his left eye, but landed some of his biggest shots in the 12th round. The fighters traded big punches throughout the bout, yet neither recorded a knockdown.

Elsewhere

U.S. women's soccer star Solo arrested

U.S. women's soccer goalkeeper Hope Solo was arrested at a Kirkland, Wash., home early Saturday on suspicion of assaulting her sister and 17-year-old nephew, but her attorney said Solo was a victim in the altercation.

"Hope is not guilty of any crime," attorney Todd Maybrown said in an e-mail. "In fact, our investigation reveals that Hope was assaulted and injured during this unfortunate incident. We look forward to the opportunity to present the true facts in court and to having this matter behind Hope very soon."

Officers responded to her sister's home just before 1 a.m. after receiving a 911 call that a woman at the Kirkland residence was hitting people and that she refused to stop or leave, the Kirkland Police Department said.

They found Solo intoxicated and upset, saw injuries on her nephew and her sister, and arrested her after determining that she was the primary aggressor.

She was booked into jail for investigation of two counts of fourth-degree domestic violence assault, and she was expected to remain in custody until an appearance Monday at Kirkland Municipal Court.

Solo, 32, has won two Olympic gold medals for the U.S. women's national team. She also plays with the Seattle Reign of the National Women's Soccer League.

Tennis: Madison Keys claimed the first title of her career when she defeated Angelique Kerber of Germany 6-3, 3-6, 7-5 to win the Aegon Championships at Eastbourne, England.

Playing in her first final, the unseeded 19-year-old is the first American to win the event since Chanda Rubin won back-to-back titles in 2002 and 2003, and she is the youngest American to win a singles title since Vania King triumphed at age 17 in Bangkok in October 2006.

Keys' triumph also marks the first time that two American women have won titles in the same week since 2002, following CoCo Vandeweghe's win, also on Saturday, at the grass-court Topshelf Open in the Netherlands.

Vandeweghe won her first career title by beating Zheng Jie of China 6-2, 6-4 at Hertogenbosch, Netherlands.

Basketball: On the opening day of the 19th season of the San Francisco Bay Area Women's Pro-Am at Kezar Pavilion, Cal forward Reshanda Gray had 40 points and Daph Kennedy 20 as Bay City defeated Golden State 93-68. In the other game, Mission Rec Center opened defense of its title with a 64-61 win over San Francisco.